I could portray you could portray she could portray we could portray you could portray they could portray
V-ing form
I could be portraying you could be portraying she could be portraying we could be portraying you could be portraying they could be portraying
Perfect
I could have portrayed you could have portrayed she could have portrayed we could have portrayed you could have portrayed they could have portrayed
V-ing perfect
I could have been portraying you could have been portraying she could have been portraying we could have been portraying you could have been portraying they could have been portraying
Negation
Simple form
I couldn't portray you couldn't portray she couldn't portray we couldn't portray you couldn't portray they couldn't portray
V-ing form
I couldn't be portraying you couldn't be portraying she couldn't be portraying we couldn't be portraying you couldn't be portraying they couldn't be portraying
Perfect
I couldn't have portrayed you couldn't have portrayed she couldn't have portrayed we couldn't have portrayed you couldn't have portrayed they couldn't have portrayed
V-ing perfect
I couldn't have been portraying you couldn't have been portraying she couldn't have been portraying we couldn't have been portraying you couldn't have been portraying they couldn't have been portraying
Interrogative form
Simple form
could I portray? could you portray? could she portray? could we portray? could you portray? could they portray?
V-ing form
could I be portraying? could you be portraying? could she be portraying? could we be portraying? could you be portraying? could they be portraying?
Perfect
could I have portrayed? could you have portrayed? could she have portrayed? could we have portrayed? could you have portrayed? could they have portrayed?
V-ing perfect
could I have been portraying? could you have been portraying? could she have been portraying? could we have been portraying? could you have been portraying? could they have been portraying?
Interro-negative form
Simple form
couldn't I portray? couldn't you portray? couldn't she portray? couldn't we portray? couldn't you portray? couldn't they portray?
V-ing form
couldn't I be portraying? couldn't you be portraying? couldn't she be portraying? couldn't we be portraying? couldn't you be portraying? couldn't they be portraying?
Perfect
couldn't I have portrayed? couldn't you have portrayed? couldn't she have portrayed? couldn't we have portrayed? couldn't you have portrayed? couldn't they have portrayed?
V-ing perfect
couldn't I have been portraying? couldn't you have been portraying? couldn't she have been portraying? couldn't we have been portraying? couldn't you have been portraying? couldn't they have been portraying?